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Spent this morning watching "Cahill, U.S. Marshall" on the DuMont, while working on adjustments to the set. I've got a big mirror sitting in front of it so I can see what affect the adjustments are having.
I want to thank everyone who has offered advice to this novice! I've been able to resurrect my grandparents old Teleset from a novelty/conversation piece/plant stand to an actual, working television!
It does seem the picture tube, while viewable, is not near "bright". I'm getting a full picture, have been able to center it in the CRT, and can get it pretty well focused. Unless there is some other factor that affects brightness, I'd say I am going to have to go on the hunt for another 19AP4. Not an easy task out here in New Mexico, where there are VERY few vintage televisions. I am VERY happy with what I have, though, considering the set has been "dead" for around half a century.
There are some very thin diagonal white lines that appear on the CRT from time to time, mostly they seem to be associated with the brightness and contrast settings. They cross the CRT from lower left to upper right. So skinny, I've not been able to photograph them. They do not distort anything on the screen. Any hints?
I've noticed that the "Brightness" control affects the focus quite a bit. Is this normal?
Lastly, when tuning, with the continuous tuner, I've noticed the picture seems to come in well, then seems to lose it's sync (get "wobbly"), then comes in good again before tuning out. I've attempted to sync the sound to the places where there is the best picture, but the sound seems to want to come in strongest closest to the "wobbly" picture. Any hints on what to check for?
Thanks!
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